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[Bug tree-optimization/42586] New: load-modify-store on x86 should be \ single instruction
- From: "andi-gcc at firstfloor dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 3 Jan 2010 06:55:12 -0000
- Subject: [Bug tree-optimization/42586] New: load-modify-store on x86 should be \ single instruction
- References: <bug-42586-7834@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #7 from andi-gcc at firstfloor dot org 2010-01-03 06:55 -------
This bug was not about the unnecessary stack frame, but about unnecessary
read-modify-write
(it seems you didn't read my description completely)
For stack frame probably another bug should be opened. I can do that.
I reverted the summary to the original one.
--
andi-gcc at firstfloor dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|SRA does not always work |New: load-modify-store on
| |x86 should be \ single
| |instruction
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42586